Объяснение:
A = 2x
B = x
C = 6x
2x + 6x + x = 180°
9x = 180°
x = 180°÷ 9
x = 20°
A = 2 × 20° = 40°
B = 1 × 20° = 20°
C = 6 × 20° = 120°
Объяснение:
A = 2x
B = x
C = 6x
2x + 6x + x = 180°
9x = 180°
x = 180°÷ 9
x = 20°
A = 2 × 20° = 40°
B = 1 × 20° = 20°
C = 6 × 20° = 120°